/* Inline functions for tree-flow.h
- Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2003, 2005, 2006, 2007, 2008, 2010
+ Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@redhat.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef _TREE_FLOW_INLINE_H
#define _TREE_FLOW_INLINE_H 1
/* Inline functions for manipulating various data structures defined in
tree-flow.h. See tree-flow.h for documentation. */
+/* Return true when gimple SSA form was built.
+ gimple_in_ssa_p is queried by gimplifier in various early stages before SSA
+ infrastructure is initialized. Check for presence of the datastructures
+ at first place. */
+static inline bool
+gimple_in_ssa_p (const struct function *fun)
+{
+ return fun && fun->gimple_df && fun->gimple_df->in_ssa_p;
+}
+
+/* Array of all variables referenced in the function. */
+static inline htab_t
+gimple_referenced_vars (const struct function *fun)
+{
+ if (!fun->gimple_df)
+ return NULL;
+ return fun->gimple_df->referenced_vars;
+}
+
+/* Artificial variable used for the virtual operand FUD chain. */
+static inline tree
+gimple_vop (const struct function *fun)
+{
+ gcc_checking_assert (fun && fun->gimple_df);
+ return fun->gimple_df->vop;
+}
+
/* Initialize the hashtable iterator HTI to point to hashtable TABLE */
static inline void *
if (x != HTAB_EMPTY_ENTRY && x != HTAB_DELETED_ENTRY)
break;
} while (++(hti->slot) < hti->limit);
-
+
if (hti->slot < hti->limit)
return *(hti->slot);
return NULL;
or NULL if we have reached the end. */
static inline bool
-end_htab_p (htab_iterator *hti)
+end_htab_p (const htab_iterator *hti)
{
if (hti->slot >= hti->limit)
return true;
return NULL;
}
+/* Get the variable with uid UID from the list of referenced vars. */
+
+static inline tree
+referenced_var (unsigned int uid)
+{
+ tree var = referenced_var_lookup (cfun, uid);
+ gcc_assert (var || uid == 0);
+ return var;
+}
+
/* Initialize ITER to point to the first referenced variable in the
referenced_vars hashtable, and return that variable. */
static inline tree
-first_referenced_var (referenced_var_iterator *iter)
+first_referenced_var (struct function *fn, referenced_var_iterator *iter)
{
- struct int_tree_map *itm;
- itm = first_htab_element (&iter->hti, referenced_vars);
- if (!itm)
- return NULL;
- return itm->to;
+ return (tree) first_htab_element (&iter->hti,
+ gimple_referenced_vars (fn));
}
/* Return true if we have hit the end of the referenced variables ITER is
iterating through. */
static inline bool
-end_referenced_vars_p (referenced_var_iterator *iter)
+end_referenced_vars_p (const referenced_var_iterator *iter)
{
return end_htab_p (&iter->hti);
}
static inline tree
next_referenced_var (referenced_var_iterator *iter)
{
- struct int_tree_map *itm;
- itm = next_htab_element (&iter->hti);
- if (!itm)
- return NULL;
- return itm->to;
-}
-
-/* Fill up VEC with the variables in the referenced vars hashtable. */
-
-static inline void
-fill_referenced_var_vec (VEC (tree, heap) **vec)
-{
- referenced_var_iterator rvi;
- tree var;
- *vec = NULL;
- FOR_EACH_REFERENCED_VAR (var, rvi)
- VEC_safe_push (tree, heap, *vec, var);
+ return (tree) next_htab_element (&iter->hti);
}
/* Return the variable annotation for T, which must be a _DECL node.
Return NULL if the variable annotation doesn't already exist. */
static inline var_ann_t
-var_ann (tree t)
+var_ann (const_tree t)
{
- gcc_assert (t);
- gcc_assert (DECL_P (t));
- gcc_assert (!t->common.ann || t->common.ann->common.type == VAR_ANN);
-
- return (var_ann_t) t->common.ann;
+ const var_ann_t *p = DECL_VAR_ANN_PTR (t);
+ return p ? *p : NULL;
}
/* Return the variable annotation for T, which must be a _DECL node.
static inline var_ann_t
get_var_ann (tree var)
{
- var_ann_t ann = var_ann (var);
- return (ann) ? ann : create_var_ann (var);
+ var_ann_t *p = DECL_VAR_ANN_PTR (var);
+ gcc_checking_assert (p);
+ return *p ? *p : create_var_ann (var);
}
-/* Return the statement annotation for T, which must be a statement
- node. Return NULL if the statement annotation doesn't exist. */
-static inline stmt_ann_t
-stmt_ann (tree t)
-{
-#ifdef ENABLE_CHECKING
- gcc_assert (is_gimple_stmt (t));
-#endif
- return (stmt_ann_t) t->common.ann;
-}
-
-/* Return the statement annotation for T, which must be a statement
- node. Create the statement annotation if it doesn't exist. */
-static inline stmt_ann_t
-get_stmt_ann (tree stmt)
-{
- stmt_ann_t ann = stmt_ann (stmt);
- return (ann) ? ann : create_stmt_ann (stmt);
-}
-
-/* Return the annotation type for annotation ANN. */
-static inline enum tree_ann_type
-ann_type (tree_ann_t ann)
+/* Get the number of the next statement uid to be allocated. */
+static inline unsigned int
+gimple_stmt_max_uid (struct function *fn)
{
- return ann->common.type;
+ return fn->last_stmt_uid;
}
-/* Return the basic block for statement T. */
-static inline basic_block
-bb_for_stmt (tree t)
+/* Set the number of the next statement uid to be allocated. */
+static inline void
+set_gimple_stmt_max_uid (struct function *fn, unsigned int maxid)
{
- stmt_ann_t ann;
-
- if (TREE_CODE (t) == PHI_NODE)
- return PHI_BB (t);
-
- ann = stmt_ann (t);
- return ann ? ann->bb : NULL;
+ fn->last_stmt_uid = maxid;
}
-/* Return the may_aliases varray for variable VAR, or NULL if it has
- no may aliases. */
-static inline varray_type
-may_aliases (tree var)
+/* Set the number of the next statement uid to be allocated. */
+static inline unsigned int
+inc_gimple_stmt_max_uid (struct function *fn)
{
- var_ann_t ann = var_ann (var);
- return ann ? ann->may_aliases : NULL;
+ return fn->last_stmt_uid++;
}
/* Return the line number for EXPR, or return -1 if we have no line
number information for it. */
static inline int
-get_lineno (tree expr)
+get_lineno (const_gimple stmt)
{
- if (expr == NULL_TREE)
- return -1;
-
- if (TREE_CODE (expr) == COMPOUND_EXPR)
- expr = TREE_OPERAND (expr, 0);
+ location_t loc;
- if (! EXPR_HAS_LOCATION (expr))
+ if (!stmt)
return -1;
- return EXPR_LINENO (expr);
-}
-
-/* Return the file name for EXPR, or return "???" if we have no
- filename information. */
-static inline const char *
-get_filename (tree expr)
-{
- const char *filename;
- if (expr == NULL_TREE)
- return "???";
-
- if (TREE_CODE (expr) == COMPOUND_EXPR)
- expr = TREE_OPERAND (expr, 0);
-
- if (EXPR_HAS_LOCATION (expr) && (filename = EXPR_FILENAME (expr)))
- return filename;
- else
- return "???";
-}
-
-/* Return true if T is a noreturn call. */
-static inline bool
-noreturn_call_p (tree t)
-{
- tree call = get_call_expr_in (t);
- return call != 0 && (call_expr_flags (call) & ECF_NORETURN) != 0;
-}
-
-/* Mark statement T as modified. */
-static inline void
-mark_stmt_modified (tree t)
-{
- stmt_ann_t ann;
- if (TREE_CODE (t) == PHI_NODE)
- return;
-
- ann = stmt_ann (t);
- if (ann == NULL)
- ann = create_stmt_ann (t);
- else if (noreturn_call_p (t))
- VEC_safe_push (tree, gc, modified_noreturn_calls, t);
- ann->modified = 1;
-}
-
-/* Mark statement T as modified, and update it. */
-static inline void
-update_stmt (tree t)
-{
- if (TREE_CODE (t) == PHI_NODE)
- return;
- mark_stmt_modified (t);
- update_stmt_operands (t);
-}
-
-static inline void
-update_stmt_if_modified (tree t)
-{
- if (stmt_modified_p (t))
- update_stmt_operands (t);
-}
-
-/* Return true if T is marked as modified, false otherwise. */
-static inline bool
-stmt_modified_p (tree t)
-{
- stmt_ann_t ann = stmt_ann (t);
+ loc = gimple_location (stmt);
+ if (loc == UNKNOWN_LOCATION)
+ return -1;
- /* Note that if the statement doesn't yet have an annotation, we consider it
- modified. This will force the next call to update_stmt_operands to scan
- the statement. */
- return ann ? ann->modified : true;
+ return LOCATION_LINE (loc);
}
/* Delink an immediate_uses node from its chain. */
static inline void
link_imm_use_to_list (ssa_use_operand_t *linknode, ssa_use_operand_t *list)
{
- /* Link the new node at the head of the list. If we are in the process of
+ /* Link the new node at the head of the list. If we are in the process of
traversing the list, we won't visit any new nodes added to it. */
linknode->prev = list;
linknode->next = list->next;
else
{
root = &(SSA_NAME_IMM_USE_NODE (def));
-#ifdef ENABLE_CHECKING
if (linknode->use)
- gcc_assert (*(linknode->use) == def);
-#endif
+ gcc_checking_assert (*(linknode->use) == def);
link_imm_use_to_list (linknode, root);
}
}
link_imm_use (use, val);
}
-/* Link ssa_imm_use node LINKNODE into the chain for DEF, with use occurring
+/* Link ssa_imm_use node LINKNODE into the chain for DEF, with use occurring
in STMT. */
static inline void
-link_imm_use_stmt (ssa_use_operand_t *linknode, tree def, tree stmt)
+link_imm_use_stmt (ssa_use_operand_t *linknode, tree def, gimple stmt)
{
if (stmt)
link_imm_use (linknode, def);
else
link_imm_use (linknode, NULL);
- linknode->stmt = stmt;
+ linknode->loc.stmt = stmt;
}
/* Relink a new node in place of an old node in the list. */
relink_imm_use (ssa_use_operand_t *node, ssa_use_operand_t *old)
{
/* The node one had better be in the same list. */
- gcc_assert (*(old->use) == *(node->use));
+ gcc_checking_assert (*(old->use) == *(node->use));
node->prev = old->prev;
node->next = old->next;
if (old->prev)
}
}
-/* Relink ssa_imm_use node LINKNODE into the chain for OLD, with use occurring
+/* Relink ssa_imm_use node LINKNODE into the chain for OLD, with use occurring
in STMT. */
static inline void
-relink_imm_use_stmt (ssa_use_operand_t *linknode, ssa_use_operand_t *old, tree stmt)
+relink_imm_use_stmt (ssa_use_operand_t *linknode, ssa_use_operand_t *old,
+ gimple stmt)
{
if (stmt)
relink_imm_use (linknode, old);
else
link_imm_use (linknode, NULL);
- linknode->stmt = stmt;
-}
-
-/* Finished the traverse of an immediate use list IMM by removing it from
- the list. */
-static inline void
-end_safe_imm_use_traverse (imm_use_iterator *imm)
-{
- delink_imm_use (&(imm->iter_node));
-}
-
-/* Return true if IMM is at the end of the list. */
-static inline bool
-end_safe_imm_use_p (imm_use_iterator *imm)
-{
- return (imm->imm_use == imm->end_p);
-}
-
-/* Initialize iterator IMM to process the list for VAR. */
-static inline use_operand_p
-first_safe_imm_use (imm_use_iterator *imm, tree var)
-{
- /* Set up and link the iterator node into the linked list for VAR. */
- imm->iter_node.use = NULL;
- imm->iter_node.stmt = NULL_TREE;
- imm->end_p = &(SSA_NAME_IMM_USE_NODE (var));
- /* Check if there are 0 elements. */
- if (imm->end_p->next == imm->end_p)
- {
- imm->imm_use = imm->end_p;
- return NULL_USE_OPERAND_P;
- }
-
- link_imm_use (&(imm->iter_node), var);
- imm->imm_use = imm->iter_node.next;
- return imm->imm_use;
+ linknode->loc.stmt = stmt;
}
-/* Bump IMM to the next use in the list. */
-static inline use_operand_p
-next_safe_imm_use (imm_use_iterator *imm)
-{
- ssa_use_operand_t *ptr;
- use_operand_p old;
-
- old = imm->imm_use;
- /* If the next node following the iter_node is still the one referred to by
- imm_use, then the list hasn't changed, go to the next node. */
- if (imm->iter_node.next == imm->imm_use)
- {
- ptr = &(imm->iter_node);
- /* Remove iternode from the list. */
- delink_imm_use (ptr);
- imm->imm_use = imm->imm_use->next;
- if (! end_safe_imm_use_p (imm))
- {
- /* This isn't the end, link iternode before the next use. */
- ptr->prev = imm->imm_use->prev;
- ptr->next = imm->imm_use;
- imm->imm_use->prev->next = ptr;
- imm->imm_use->prev = ptr;
- }
- else
- return old;
- }
- else
- {
- /* If the 'next' value after the iterator isn't the same as it was, then
- a node has been deleted, so we simply proceed to the node following
- where the iterator is in the list. */
- imm->imm_use = imm->iter_node.next;
- if (end_safe_imm_use_p (imm))
- {
- end_safe_imm_use_traverse (imm);
- return old;
- }
- }
-
- return imm->imm_use;
-}
/* Return true is IMM has reached the end of the immediate use list. */
static inline bool
-end_readonly_imm_use_p (imm_use_iterator *imm)
+end_readonly_imm_use_p (const imm_use_iterator *imm)
{
return (imm->imm_use == imm->end_p);
}
static inline use_operand_p
first_readonly_imm_use (imm_use_iterator *imm, tree var)
{
- gcc_assert (TREE_CODE (var) == SSA_NAME);
-
imm->end_p = &(SSA_NAME_IMM_USE_NODE (var));
imm->imm_use = imm->end_p->next;
#ifdef ENABLE_CHECKING
use_operand_p old = imm->imm_use;
#ifdef ENABLE_CHECKING
- /* If this assertion fails, it indicates the 'next' pointer has changed
- since we the last bump. This indicates that the list is being modified
+ /* If this assertion fails, it indicates the 'next' pointer has changed
+ since the last bump. This indicates that the list is being modified
via stmt changes, or SET_USE, or somesuch thing, and you need to be
using the SAFE version of the iterator. */
gcc_assert (imm->iter_node.next == old->next);
imm->imm_use = old->next;
if (end_readonly_imm_use_p (imm))
- return old;
+ return NULL_USE_OPERAND_P;
return imm->imm_use;
}
-/* Return true if VAR has no uses. */
+/* tree-cfg.c */
+extern bool has_zero_uses_1 (const ssa_use_operand_t *head);
+extern bool single_imm_use_1 (const ssa_use_operand_t *head,
+ use_operand_p *use_p, gimple *stmt);
+
+/* Return true if VAR has no nondebug uses. */
static inline bool
-has_zero_uses (tree var)
+has_zero_uses (const_tree var)
{
- ssa_use_operand_t *ptr;
- ptr = &(SSA_NAME_IMM_USE_NODE (var));
- /* A single use means there is no items in the list. */
- return (ptr == ptr->next);
+ const ssa_use_operand_t *const ptr = &(SSA_NAME_IMM_USE_NODE (var));
+
+ /* A single use_operand means there is no items in the list. */
+ if (ptr == ptr->next)
+ return true;
+
+ /* If there are debug stmts, we have to look at each use and see
+ whether there are any nondebug uses. */
+ if (!MAY_HAVE_DEBUG_STMTS)
+ return false;
+
+ return has_zero_uses_1 (ptr);
}
-/* Return true if VAR has a single use. */
+/* Return true if VAR has a single nondebug use. */
static inline bool
-has_single_use (tree var)
+has_single_use (const_tree var)
{
- ssa_use_operand_t *ptr;
- ptr = &(SSA_NAME_IMM_USE_NODE (var));
- /* A single use means there is one item in the list. */
- return (ptr != ptr->next && ptr == ptr->next->next);
+ const ssa_use_operand_t *const ptr = &(SSA_NAME_IMM_USE_NODE (var));
+
+ /* If there aren't any uses whatsoever, we're done. */
+ if (ptr == ptr->next)
+ return false;
+
+ /* If there's a single use, check that it's not a debug stmt. */
+ if (ptr == ptr->next->next)
+ return !is_gimple_debug (USE_STMT (ptr->next));
+
+ /* If there are debug stmts, we have to look at each of them. */
+ if (!MAY_HAVE_DEBUG_STMTS)
+ return false;
+
+ return single_imm_use_1 (ptr, NULL, NULL);
}
-/* If VAR has only a single immediate use, return true, and set USE_P and STMT
- to the use pointer and stmt of occurrence. */
+
+/* If VAR has only a single immediate nondebug use, return true, and
+ set USE_P and STMT to the use pointer and stmt of occurrence. */
static inline bool
-single_imm_use (tree var, use_operand_p *use_p, tree *stmt)
+single_imm_use (const_tree var, use_operand_p *use_p, gimple *stmt)
{
- ssa_use_operand_t *ptr;
+ const ssa_use_operand_t *const ptr = &(SSA_NAME_IMM_USE_NODE (var));
- ptr = &(SSA_NAME_IMM_USE_NODE (var));
- if (ptr != ptr->next && ptr == ptr->next->next)
+ /* If there aren't any uses whatsoever, we're done. */
+ if (ptr == ptr->next)
{
- *use_p = ptr->next;
- *stmt = ptr->next->stmt;
- return true;
+ return_false:
+ *use_p = NULL_USE_OPERAND_P;
+ *stmt = NULL;
+ return false;
}
- *use_p = NULL_USE_OPERAND_P;
- *stmt = NULL_TREE;
- return false;
+
+ /* If there's a single use, check that it's not a debug stmt. */
+ if (ptr == ptr->next->next)
+ {
+ if (!is_gimple_debug (USE_STMT (ptr->next)))
+ {
+ *use_p = ptr->next;
+ *stmt = ptr->next->loc.stmt;
+ return true;
+ }
+ else
+ goto return_false;
+ }
+
+ /* If there are debug stmts, we have to look at each of them. */
+ if (!MAY_HAVE_DEBUG_STMTS)
+ goto return_false;
+
+ return single_imm_use_1 (ptr, use_p, stmt);
}
-/* Return the number of immediate uses of VAR. */
+/* Return the number of nondebug immediate uses of VAR. */
static inline unsigned int
-num_imm_uses (tree var)
+num_imm_uses (const_tree var)
{
- ssa_use_operand_t *ptr, *start;
- unsigned int num;
+ const ssa_use_operand_t *const start = &(SSA_NAME_IMM_USE_NODE (var));
+ const ssa_use_operand_t *ptr;
+ unsigned int num = 0;
- start = &(SSA_NAME_IMM_USE_NODE (var));
- num = 0;
- for (ptr = start->next; ptr != start; ptr = ptr->next)
- num++;
+ if (!MAY_HAVE_DEBUG_STMTS)
+ for (ptr = start->next; ptr != start; ptr = ptr->next)
+ num++;
+ else
+ for (ptr = start->next; ptr != start; ptr = ptr->next)
+ if (!is_gimple_debug (USE_STMT (ptr)))
+ num++;
return num;
}
-
-/* Return the tree pointer to by USE. */
+/* Return the tree pointed-to by USE. */
static inline tree
get_use_from_ptr (use_operand_p use)
-{
+{
return *(use->use);
-}
+}
-/* Return the tree pointer to by DEF. */
+/* Return the tree pointed-to by DEF. */
static inline tree
get_def_from_ptr (def_operand_p def)
{
return *def;
}
-/* Return a def_operand_p pointer for the result of PHI. */
-static inline def_operand_p
-get_phi_result_ptr (tree phi)
+/* Return a use_operand_p pointer for argument I of PHI node GS. */
+
+static inline use_operand_p
+gimple_phi_arg_imm_use_ptr (gimple gs, int i)
{
- return &(PHI_RESULT_TREE (phi));
+ return &gimple_phi_arg (gs, i)->imm_use;
}
-/* Return a use_operand_p pointer for argument I of phinode PHI. */
-static inline use_operand_p
-get_phi_arg_def_ptr (tree phi, int i)
+/* Return the tree operand for argument I of PHI node GS. */
+
+static inline tree
+gimple_phi_arg_def (gimple gs, size_t index)
{
- return &(PHI_ARG_IMM_USE_NODE (phi,i));
+ struct phi_arg_d *pd = gimple_phi_arg (gs, index);
+ return get_use_from_ptr (&pd->imm_use);
}
+/* Return a pointer to the tree operand for argument I of PHI node GS. */
-/* Return the bitmap of addresses taken by STMT, or NULL if it takes
- no addresses. */
-static inline bitmap
-addresses_taken (tree stmt)
+static inline tree *
+gimple_phi_arg_def_ptr (gimple gs, size_t index)
{
- stmt_ann_t ann = stmt_ann (stmt);
- return ann ? ann->addresses_taken : NULL;
+ return &gimple_phi_arg (gs, index)->def;
}
+/* Return the edge associated with argument I of phi node GS. */
+
+static inline edge
+gimple_phi_arg_edge (gimple gs, size_t i)
+{
+ return EDGE_PRED (gimple_bb (gs), i);
+}
+
+/* Return the source location of gimple argument I of phi node GS. */
+
+static inline source_location
+gimple_phi_arg_location (gimple gs, size_t i)
+{
+ return gimple_phi_arg (gs, i)->locus;
+}
+
+/* Return the source location of the argument on edge E of phi node GS. */
+
+static inline source_location
+gimple_phi_arg_location_from_edge (gimple gs, edge e)
+{
+ return gimple_phi_arg (gs, e->dest_idx)->locus;
+}
+
+/* Set the source location of gimple argument I of phi node GS to LOC. */
+
+static inline void
+gimple_phi_arg_set_location (gimple gs, size_t i, source_location loc)
+{
+ gimple_phi_arg (gs, i)->locus = loc;
+}
+
+/* Return TRUE if argument I of phi node GS has a location record. */
+
+static inline bool
+gimple_phi_arg_has_location (gimple gs, size_t i)
+{
+ return gimple_phi_arg_location (gs, i) != UNKNOWN_LOCATION;
+}
+
+
/* Return the PHI nodes for basic block BB, or NULL if there are no
PHI nodes. */
-static inline tree
-phi_nodes (basic_block bb)
+static inline gimple_seq
+phi_nodes (const_basic_block bb)
{
- return bb->phi_nodes;
+ gcc_checking_assert (!(bb->flags & BB_RTL));
+ if (!bb->il.gimple)
+ return NULL;
+ return bb->il.gimple->phi_nodes;
}
-/* Set list of phi nodes of a basic block BB to L. */
+/* Set PHI nodes of a basic block BB to SEQ. */
static inline void
-set_phi_nodes (basic_block bb, tree l)
+set_phi_nodes (basic_block bb, gimple_seq seq)
{
- tree phi;
+ gimple_stmt_iterator i;
- bb->phi_nodes = l;
- for (phi = l; phi; phi = PHI_CHAIN (phi))
- set_bb_for_stmt (phi, bb);
+ gcc_checking_assert (!(bb->flags & BB_RTL));
+ bb->il.gimple->phi_nodes = seq;
+ if (seq)
+ for (i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i))
+ gimple_set_bb (gsi_stmt (i), bb);
}
/* Return the phi argument which contains the specified use. */
phi_arg_index_from_use (use_operand_p use)
{
struct phi_arg_d *element, *root;
- int index;
- tree phi;
+ size_t index;
+ gimple phi;
/* Since the use is the first thing in a PHI argument element, we can
calculate its index based on casting it to an argument, and performing
pointer arithmetic. */
phi = USE_STMT (use);
- gcc_assert (TREE_CODE (phi) == PHI_NODE);
element = (struct phi_arg_d *)use;
- root = &(PHI_ARG_ELT (phi, 0));
+ root = gimple_phi_arg (phi, 0);
index = element - root;
-#ifdef ENABLE_CHECKING
- /* Make sure the calculation doesn't have any leftover bytes. If it does,
+ /* Make sure the calculation doesn't have any leftover bytes. If it does,
then imm_use is likely not the first element in phi_arg_d. */
- gcc_assert (
- (((char *)element - (char *)root) % sizeof (struct phi_arg_d)) == 0);
- gcc_assert (index >= 0 && index < PHI_ARG_CAPACITY (phi));
-#endif
-
+ gcc_checking_assert ((((char *)element - (char *)root)
+ % sizeof (struct phi_arg_d)) == 0
+ && index < gimple_phi_capacity (phi));
+
return index;
}
set_is_used (tree var)
{
var_ann_t ann = get_var_ann (var);
- ann->used = 1;
-}
-
-
-/* ----------------------------------------------------------------------- */
-
-/* Return true if T is an executable statement. */
-static inline bool
-is_exec_stmt (tree t)
-{
- return (t && !IS_EMPTY_STMT (t) && t != error_mark_node);
+ ann->used = true;
}
+/* Clear VAR's used flag. */
-/* Return true if this stmt can be the target of a control transfer stmt such
- as a goto. */
-static inline bool
-is_label_stmt (tree t)
-{
- if (t)
- switch (TREE_CODE (t))
- {
- case LABEL_DECL:
- case LABEL_EXPR:
- case CASE_LABEL_EXPR:
- return true;
- default:
- return false;
- }
- return false;
-}
-
-/* Set the default definition for VAR to DEF. */
static inline void
-set_default_def (tree var, tree def)
-{
- var_ann_t ann = get_var_ann (var);
- ann->default_def = def;
-}
-
-/* Return the default definition for variable VAR, or NULL if none
- exists. */
-static inline tree
-default_def (tree var)
+clear_is_used (tree var)
{
var_ann_t ann = var_ann (var);
- return ann ? ann->default_def : NULL_TREE;
+ ann->used = false;
}
-/* PHI nodes should contain only ssa_names and invariants. A test
- for ssa_name is definitely simpler; don't let invalid contents
- slip in in the meantime. */
+/* Return true if VAR is marked as used. */
static inline bool
-phi_ssa_name_p (tree t)
+is_used_p (tree var)
{
- if (TREE_CODE (t) == SSA_NAME)
- return true;
-#ifdef ENABLE_CHECKING
- gcc_assert (is_gimple_min_invariant (t));
-#endif
- return false;
+ var_ann_t ann = var_ann (var);
+ return ann->used;
}
-/* ----------------------------------------------------------------------- */
+/* Return true if T (assumed to be a DECL) is a global variable.
+ A variable is considered global if its storage is not automatic. */
-/* Return a block_stmt_iterator that points to beginning of basic
- block BB. */
-static inline block_stmt_iterator
-bsi_start (basic_block bb)
+static inline bool
+is_global_var (const_tree t)
{
- block_stmt_iterator bsi;
- if (bb->stmt_list)
- bsi.tsi = tsi_start (bb->stmt_list);
- else
- {
- gcc_assert (bb->index < 0);
- bsi.tsi.ptr = NULL;
- bsi.tsi.container = NULL;
- }
- bsi.bb = bb;
- return bsi;
+ return (TREE_STATIC (t) || DECL_EXTERNAL (t));
}
-/* Return a block statement iterator that points to the first non-label
- block BB. */
-
-static inline block_stmt_iterator
-bsi_after_labels (basic_block bb)
-{
- block_stmt_iterator bsi;
- tree_stmt_iterator next;
-
- bsi.bb = bb;
-
- if (!bb->stmt_list)
- {
- gcc_assert (bb->index < 0);
- bsi.tsi.ptr = NULL;
- bsi.tsi.container = NULL;
- return bsi;
- }
-
- bsi.tsi = tsi_start (bb->stmt_list);
- if (tsi_end_p (bsi.tsi))
- return bsi;
-
- next = bsi.tsi;
- tsi_next (&next);
-
- while (!tsi_end_p (next)
- && TREE_CODE (tsi_stmt (next)) == LABEL_EXPR)
- {
- bsi.tsi = next;
- tsi_next (&next);
- }
- return bsi;
-}
+/* Return true if VAR may be aliased. A variable is considered as
+ maybe aliased if it has its address taken by the local TU
+ or possibly by another TU and might be modified through a pointer. */
-/* Return a block statement iterator that points to the end of basic
- block BB. */
-static inline block_stmt_iterator
-bsi_last (basic_block bb)
-{
- block_stmt_iterator bsi;
- if (bb->stmt_list)
- bsi.tsi = tsi_last (bb->stmt_list);
- else
- {
- gcc_assert (bb->index < 0);
- bsi.tsi.ptr = NULL;
- bsi.tsi.container = NULL;
- }
- bsi.bb = bb;
- return bsi;
-}
-
-/* Return true if block statement iterator I has reached the end of
- the basic block. */
static inline bool
-bsi_end_p (block_stmt_iterator i)
+may_be_aliased (const_tree var)
{
- return tsi_end_p (i.tsi);
+ return (TREE_CODE (var) != CONST_DECL
+ && !((TREE_STATIC (var) || TREE_PUBLIC (var) || DECL_EXTERNAL (var))
+ && TREE_READONLY (var)
+ && !TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (var)))
+ && (TREE_PUBLIC (var)
+ || DECL_EXTERNAL (var)
+ || TREE_ADDRESSABLE (var)));
}
-/* Modify block statement iterator I so that it is at the next
- statement in the basic block. */
-static inline void
-bsi_next (block_stmt_iterator *i)
-{
- tsi_next (&i->tsi);
-}
-/* Modify block statement iterator I so that it is at the previous
- statement in the basic block. */
-static inline void
-bsi_prev (block_stmt_iterator *i)
-{
- tsi_prev (&i->tsi);
-}
+/* PHI nodes should contain only ssa_names and invariants. A test
+ for ssa_name is definitely simpler; don't let invalid contents
+ slip in in the meantime. */
-/* Return the statement that block statement iterator I is currently
- at. */
-static inline tree
-bsi_stmt (block_stmt_iterator i)
+static inline bool
+phi_ssa_name_p (const_tree t)
{
- return tsi_stmt (i.tsi);
+ if (TREE_CODE (t) == SSA_NAME)
+ return true;
+ gcc_checking_assert (is_gimple_min_invariant (t));
+ return false;
}
-/* Return a pointer to the statement that block statement iterator I
- is currently at. */
-static inline tree *
-bsi_stmt_ptr (block_stmt_iterator i)
-{
- return tsi_stmt_ptr (i.tsi);
-}
/* Returns the loop of the statement STMT. */
static inline struct loop *
-loop_containing_stmt (tree stmt)
+loop_containing_stmt (gimple stmt)
{
- basic_block bb = bb_for_stmt (stmt);
+ basic_block bb = gimple_bb (stmt);
if (!bb)
return NULL;
return bb->loop_father;
}
-/* Return true if VAR is a clobbered by function calls. */
-static inline bool
-is_call_clobbered (tree var)
-{
- return is_global_var (var)
- || bitmap_bit_p (call_clobbered_vars, DECL_UID (var));
-}
-
-/* Mark variable VAR as being clobbered by function calls. */
-static inline void
-mark_call_clobbered (tree var)
-{
- /* If VAR is a memory tag, then we need to consider it a global
- variable. This is because the pointer that VAR represents has
- been found to point to either an arbitrary location or to a known
- location in global memory. */
- if (MTAG_P (var) && TREE_CODE (var) != STRUCT_FIELD_TAG)
- MTAG_GLOBAL (var) = 1;
- bitmap_set_bit (call_clobbered_vars, DECL_UID (var));
- ssa_call_clobbered_cache_valid = false;
- ssa_ro_call_cache_valid = false;
-}
-
-/* Clear the call-clobbered attribute from variable VAR. */
-static inline void
-clear_call_clobbered (tree var)
-{
- if (MTAG_P (var) && TREE_CODE (var) != STRUCT_FIELD_TAG)
- MTAG_GLOBAL (var) = 0;
- bitmap_clear_bit (call_clobbered_vars, DECL_UID (var));
- ssa_call_clobbered_cache_valid = false;
- ssa_ro_call_cache_valid = false;
-}
-
-/* Mark variable VAR as being non-addressable. */
-static inline void
-mark_non_addressable (tree var)
-{
- bitmap_clear_bit (call_clobbered_vars, DECL_UID (var));
- TREE_ADDRESSABLE (var) = 0;
- ssa_call_clobbered_cache_valid = false;
- ssa_ro_call_cache_valid = false;
-}
-
-/* Return the common annotation for T. Return NULL if the annotation
- doesn't already exist. */
-static inline tree_ann_t
-tree_ann (tree t)
-{
- return t->common.ann;
-}
-
-/* Return a common annotation for T. Create the constant annotation if it
- doesn't exist. */
-static inline tree_ann_t
-get_tree_ann (tree t)
-{
- tree_ann_t ann = tree_ann (t);
- return (ann) ? ann : create_tree_ann (t);
-}
/* ----------------------------------------------------------------------- */
/* Return true if PTR is finished iterating. */
static inline bool
-op_iter_done (ssa_op_iter *ptr)
+op_iter_done (const ssa_op_iter *ptr)
{
return ptr->done;
}
op_iter_next_use (ssa_op_iter *ptr)
{
use_operand_p use_p;
-#ifdef ENABLE_CHECKING
- gcc_assert (ptr->iter_type == ssa_op_iter_use);
-#endif
+ gcc_checking_assert (ptr->iter_type == ssa_op_iter_use);
if (ptr->uses)
{
use_p = USE_OP_PTR (ptr->uses);
ptr->uses = ptr->uses->next;
return use_p;
}
- if (ptr->vuses)
- {
- use_p = VUSE_OP_PTR (ptr->vuses);
- ptr->vuses = ptr->vuses->next;
- return use_p;
- }
- if (ptr->mayuses)
- {
- use_p = MAYDEF_OP_PTR (ptr->mayuses);
- ptr->mayuses = ptr->mayuses->next;
- return use_p;
- }
- if (ptr->mustkills)
- {
- use_p = MUSTDEF_KILL_PTR (ptr->mustkills);
- ptr->mustkills = ptr->mustkills->next;
- return use_p;
- }
if (ptr->phi_i < ptr->num_phi)
{
return PHI_ARG_DEF_PTR (ptr->phi_stmt, (ptr->phi_i)++);
op_iter_next_def (ssa_op_iter *ptr)
{
def_operand_p def_p;
-#ifdef ENABLE_CHECKING
- gcc_assert (ptr->iter_type == ssa_op_iter_def);
-#endif
+ gcc_checking_assert (ptr->iter_type == ssa_op_iter_def);
if (ptr->defs)
{
def_p = DEF_OP_PTR (ptr->defs);
ptr->defs = ptr->defs->next;
return def_p;
}
- if (ptr->mustdefs)
- {
- def_p = MUSTDEF_RESULT_PTR (ptr->mustdefs);
- ptr->mustdefs = ptr->mustdefs->next;
- return def_p;
- }
- if (ptr->maydefs)
- {
- def_p = MAYDEF_RESULT_PTR (ptr->maydefs);
- ptr->maydefs = ptr->maydefs->next;
- return def_p;
- }
ptr->done = true;
return NULL_DEF_OPERAND_P;
}
op_iter_next_tree (ssa_op_iter *ptr)
{
tree val;
-#ifdef ENABLE_CHECKING
- gcc_assert (ptr->iter_type == ssa_op_iter_tree);
-#endif
+ gcc_checking_assert (ptr->iter_type == ssa_op_iter_tree);
if (ptr->uses)
{
val = USE_OP (ptr->uses);
ptr->uses = ptr->uses->next;
return val;
}
- if (ptr->vuses)
- {
- val = VUSE_OP (ptr->vuses);
- ptr->vuses = ptr->vuses->next;
- return val;
- }
- if (ptr->mayuses)
- {
- val = MAYDEF_OP (ptr->mayuses);
- ptr->mayuses = ptr->mayuses->next;
- return val;
- }
- if (ptr->mustkills)
- {
- val = MUSTDEF_KILL (ptr->mustkills);
- ptr->mustkills = ptr->mustkills->next;
- return val;
- }
if (ptr->defs)
{
val = DEF_OP (ptr->defs);
ptr->defs = ptr->defs->next;
return val;
}
- if (ptr->mustdefs)
- {
- val = MUSTDEF_RESULT (ptr->mustdefs);
- ptr->mustdefs = ptr->mustdefs->next;
- return val;
- }
- if (ptr->maydefs)
- {
- val = MAYDEF_RESULT (ptr->maydefs);
- ptr->maydefs = ptr->maydefs->next;
- return val;
- }
ptr->done = true;
return NULL_TREE;
{
ptr->defs = NULL;
ptr->uses = NULL;
- ptr->vuses = NULL;
- ptr->maydefs = NULL;
- ptr->mayuses = NULL;
- ptr->mustdefs = NULL;
- ptr->mustkills = NULL;
ptr->iter_type = ssa_op_iter_none;
ptr->phi_i = 0;
ptr->num_phi = 0;
- ptr->phi_stmt = NULL_TREE;
+ ptr->phi_stmt = NULL;
ptr->done = true;
}
/* Initialize the iterator PTR to the virtual defs in STMT. */
static inline void
-op_iter_init (ssa_op_iter *ptr, tree stmt, int flags)
-{
-#ifdef ENABLE_CHECKING
- gcc_assert (stmt_ann (stmt));
-#endif
-
- ptr->defs = (flags & SSA_OP_DEF) ? DEF_OPS (stmt) : NULL;
- ptr->uses = (flags & SSA_OP_USE) ? USE_OPS (stmt) : NULL;
- ptr->vuses = (flags & SSA_OP_VUSE) ? VUSE_OPS (stmt) : NULL;
- ptr->maydefs = (flags & SSA_OP_VMAYDEF) ? MAYDEF_OPS (stmt) : NULL;
- ptr->mayuses = (flags & SSA_OP_VMAYUSE) ? MAYDEF_OPS (stmt) : NULL;
- ptr->mustdefs = (flags & SSA_OP_VMUSTDEF) ? MUSTDEF_OPS (stmt) : NULL;
- ptr->mustkills = (flags & SSA_OP_VMUSTKILL) ? MUSTDEF_OPS (stmt) : NULL;
+op_iter_init (ssa_op_iter *ptr, gimple stmt, int flags)
+{
+ /* PHI nodes require a different iterator initialization path. We
+ do not support iterating over virtual defs or uses without
+ iterating over defs or uses at the same time. */
+ gcc_checking_assert (gimple_code (stmt) != GIMPLE_PHI
+ && (!(flags & SSA_OP_VDEF) || (flags & SSA_OP_DEF))
+ && (!(flags & SSA_OP_VUSE) || (flags & SSA_OP_USE)));
+ ptr->defs = (flags & (SSA_OP_DEF|SSA_OP_VDEF)) ? gimple_def_ops (stmt) : NULL;
+ if (!(flags & SSA_OP_VDEF)
+ && ptr->defs
+ && gimple_vdef (stmt) != NULL_TREE)
+ ptr->defs = ptr->defs->next;
+ ptr->uses = (flags & (SSA_OP_USE|SSA_OP_VUSE)) ? gimple_use_ops (stmt) : NULL;
+ if (!(flags & SSA_OP_VUSE)
+ && ptr->uses
+ && gimple_vuse (stmt) != NULL_TREE)
+ ptr->uses = ptr->uses->next;
ptr->done = false;
ptr->phi_i = 0;
ptr->num_phi = 0;
- ptr->phi_stmt = NULL_TREE;
+ ptr->phi_stmt = NULL;
}
/* Initialize iterator PTR to the use operands in STMT based on FLAGS. Return
the first use. */
static inline use_operand_p
-op_iter_init_use (ssa_op_iter *ptr, tree stmt, int flags)
+op_iter_init_use (ssa_op_iter *ptr, gimple stmt, int flags)
{
- gcc_assert ((flags & SSA_OP_ALL_DEFS) == 0);
+ gcc_checking_assert ((flags & SSA_OP_ALL_DEFS) == 0
+ && (flags & SSA_OP_USE));
op_iter_init (ptr, stmt, flags);
ptr->iter_type = ssa_op_iter_use;
return op_iter_next_use (ptr);
/* Initialize iterator PTR to the def operands in STMT based on FLAGS. Return
the first def. */
static inline def_operand_p
-op_iter_init_def (ssa_op_iter *ptr, tree stmt, int flags)
+op_iter_init_def (ssa_op_iter *ptr, gimple stmt, int flags)
{
- gcc_assert ((flags & (SSA_OP_ALL_USES | SSA_OP_VIRTUAL_KILLS)) == 0);
+ gcc_checking_assert ((flags & SSA_OP_ALL_USES) == 0
+ && (flags & SSA_OP_DEF));
op_iter_init (ptr, stmt, flags);
ptr->iter_type = ssa_op_iter_def;
return op_iter_next_def (ptr);
/* Initialize iterator PTR to the operands in STMT based on FLAGS. Return
the first operand as a tree. */
static inline tree
-op_iter_init_tree (ssa_op_iter *ptr, tree stmt, int flags)
+op_iter_init_tree (ssa_op_iter *ptr, gimple stmt, int flags)
{
op_iter_init (ptr, stmt, flags);
ptr->iter_type = ssa_op_iter_tree;
return op_iter_next_tree (ptr);
}
-/* Get the next iterator mustdef value for PTR, returning the mustdef values in
- KILL and DEF. */
-static inline void
-op_iter_next_maymustdef (use_operand_p *use, def_operand_p *def,
- ssa_op_iter *ptr)
-{
-#ifdef ENABLE_CHECKING
- gcc_assert (ptr->iter_type == ssa_op_iter_maymustdef);
-#endif
- if (ptr->mayuses)
- {
- *def = MAYDEF_RESULT_PTR (ptr->mayuses);
- *use = MAYDEF_OP_PTR (ptr->mayuses);
- ptr->mayuses = ptr->mayuses->next;
- return;
- }
-
- if (ptr->mustkills)
- {
- *def = MUSTDEF_RESULT_PTR (ptr->mustkills);
- *use = MUSTDEF_KILL_PTR (ptr->mustkills);
- ptr->mustkills = ptr->mustkills->next;
- return;
- }
-
- *def = NULL_DEF_OPERAND_P;
- *use = NULL_USE_OPERAND_P;
- ptr->done = true;
- return;
-}
-
-
-/* Initialize iterator PTR to the operands in STMT. Return the first operands
- in USE and DEF. */
-static inline void
-op_iter_init_maydef (ssa_op_iter *ptr, tree stmt, use_operand_p *use,
- def_operand_p *def)
-{
- gcc_assert (TREE_CODE (stmt) != PHI_NODE);
-
- op_iter_init (ptr, stmt, SSA_OP_VMAYUSE);
- ptr->iter_type = ssa_op_iter_maymustdef;
- op_iter_next_maymustdef (use, def, ptr);
-}
-
-
-/* Initialize iterator PTR to the operands in STMT. Return the first operands
- in KILL and DEF. */
-static inline void
-op_iter_init_mustdef (ssa_op_iter *ptr, tree stmt, use_operand_p *kill,
- def_operand_p *def)
-{
- gcc_assert (TREE_CODE (stmt) != PHI_NODE);
-
- op_iter_init (ptr, stmt, SSA_OP_VMUSTKILL);
- ptr->iter_type = ssa_op_iter_maymustdef;
- op_iter_next_maymustdef (kill, def, ptr);
-}
-
-/* Initialize iterator PTR to the operands in STMT. Return the first operands
- in KILL and DEF. */
-static inline void
-op_iter_init_must_and_may_def (ssa_op_iter *ptr, tree stmt,
- use_operand_p *kill, def_operand_p *def)
-{
- gcc_assert (TREE_CODE (stmt) != PHI_NODE);
-
- op_iter_init (ptr, stmt, SSA_OP_VMUSTKILL|SSA_OP_VMAYUSE);
- ptr->iter_type = ssa_op_iter_maymustdef;
- op_iter_next_maymustdef (kill, def, ptr);
-}
-
/* If there is a single operand in STMT matching FLAGS, return it. Otherwise
return NULL. */
static inline tree
-single_ssa_tree_operand (tree stmt, int flags)
+single_ssa_tree_operand (gimple stmt, int flags)
{
tree var;
ssa_op_iter iter;
/* If there is a single operand in STMT matching FLAGS, return it. Otherwise
return NULL. */
static inline use_operand_p
-single_ssa_use_operand (tree stmt, int flags)
+single_ssa_use_operand (gimple stmt, int flags)
{
use_operand_p var;
ssa_op_iter iter;
/* If there is a single operand in STMT matching FLAGS, return it. Otherwise
return NULL. */
static inline def_operand_p
-single_ssa_def_operand (tree stmt, int flags)
+single_ssa_def_operand (gimple stmt, int flags)
{
def_operand_p var;
ssa_op_iter iter;
}
-/* If there is a single operand in STMT matching FLAGS, return it. Otherwise
- return NULL. */
+/* Return true if there are zero operands in STMT matching the type
+ given in FLAGS. */
static inline bool
-zero_ssa_operands (tree stmt, int flags)
+zero_ssa_operands (gimple stmt, int flags)
{
ssa_op_iter iter;
/* Return the number of operands matching FLAGS in STMT. */
static inline int
-num_ssa_operands (tree stmt, int flags)
+num_ssa_operands (gimple stmt, int flags)
{
ssa_op_iter iter;
tree t;
int num = 0;
+ gcc_checking_assert (gimple_code (stmt) != GIMPLE_PHI);
FOR_EACH_SSA_TREE_OPERAND (t, stmt, iter, flags)
num++;
return num;
}
+static inline use_operand_p
+op_iter_init_phiuse (ssa_op_iter *ptr, gimple phi, int flags);
/* Delink all immediate_use information for STMT. */
static inline void
-delink_stmt_imm_use (tree stmt)
+delink_stmt_imm_use (gimple stmt)
{
ssa_op_iter iter;
use_operand_p use_p;
if (ssa_operands_active ())
- FOR_EACH_SSA_USE_OPERAND (use_p, stmt, iter,
- (SSA_OP_ALL_USES | SSA_OP_ALL_KILLS))
+ FOR_EACH_PHI_OR_STMT_USE (use_p, stmt, iter, SSA_OP_ALL_USES)
delink_imm_use (use_p);
}
-/* This routine will compare all the operands matching FLAGS in STMT1 to those
- in STMT2. TRUE is returned if they are the same. STMTs can be NULL. */
-static inline bool
-compare_ssa_operands_equal (tree stmt1, tree stmt2, int flags)
-{
- ssa_op_iter iter1, iter2;
- tree op1 = NULL_TREE;
- tree op2 = NULL_TREE;
- bool look1, look2;
-
- if (stmt1 == stmt2)
- return true;
-
- look1 = stmt1 && stmt_ann (stmt1);
- look2 = stmt2 && stmt_ann (stmt2);
-
- if (look1)
- {
- op1 = op_iter_init_tree (&iter1, stmt1, flags);
- if (!look2)
- return op_iter_done (&iter1);
- }
- else
- clear_and_done_ssa_iter (&iter1);
-
- if (look2)
- {
- op2 = op_iter_init_tree (&iter2, stmt2, flags);
- if (!look1)
- return op_iter_done (&iter2);
- }
- else
- clear_and_done_ssa_iter (&iter2);
-
- while (!op_iter_done (&iter1) && !op_iter_done (&iter2))
- {
- if (op1 != op2)
- return false;
- op1 = op_iter_next_tree (&iter1);
- op2 = op_iter_next_tree (&iter2);
- }
-
- return (op_iter_done (&iter1) && op_iter_done (&iter2));
-}
-
-
/* If there is a single DEF in the PHI node which matches FLAG, return it.
Otherwise return NULL_DEF_OPERAND_P. */
static inline tree
-single_phi_def (tree stmt, int flags)
+single_phi_def (gimple stmt, int flags)
{
tree def = PHI_RESULT (stmt);
- if ((flags & SSA_OP_DEF) && is_gimple_reg (def))
+ if ((flags & SSA_OP_DEF) && is_gimple_reg (def))
return def;
if ((flags & SSA_OP_VIRTUAL_DEFS) && !is_gimple_reg (def))
return def;
}
/* Initialize the iterator PTR for uses matching FLAGS in PHI. FLAGS should
- be either SSA_OP_USES or SAS_OP_VIRTUAL_USES. */
+ be either SSA_OP_USES or SSA_OP_VIRTUAL_USES. */
static inline use_operand_p
-op_iter_init_phiuse (ssa_op_iter *ptr, tree phi, int flags)
+op_iter_init_phiuse (ssa_op_iter *ptr, gimple phi, int flags)
{
- tree phi_def = PHI_RESULT (phi);
+ tree phi_def = gimple_phi_result (phi);
int comp;
clear_and_done_ssa_iter (ptr);
ptr->done = false;
- gcc_assert ((flags & (SSA_OP_USE | SSA_OP_VIRTUAL_USES)) != 0);
+ gcc_checking_assert ((flags & (SSA_OP_USE | SSA_OP_VIRTUAL_USES)) != 0);
comp = (is_gimple_reg (phi_def) ? SSA_OP_USE : SSA_OP_VIRTUAL_USES);
-
+
/* If the PHI node doesn't the operand type we care about, we're done. */
if ((flags & comp) == 0)
{
}
ptr->phi_stmt = phi;
- ptr->num_phi = PHI_NUM_ARGS (phi);
+ ptr->num_phi = gimple_phi_num_args (phi);
ptr->iter_type = ssa_op_iter_use;
return op_iter_next_use (ptr);
}
/* Start an iterator for a PHI definition. */
static inline def_operand_p
-op_iter_init_phidef (ssa_op_iter *ptr, tree phi, int flags)
+op_iter_init_phidef (ssa_op_iter *ptr, gimple phi, int flags)
{
tree phi_def = PHI_RESULT (phi);
int comp;
clear_and_done_ssa_iter (ptr);
ptr->done = false;
- gcc_assert ((flags & (SSA_OP_DEF | SSA_OP_VIRTUAL_DEFS)) != 0);
+ gcc_checking_assert ((flags & (SSA_OP_DEF | SSA_OP_VIRTUAL_DEFS)) != 0);
comp = (is_gimple_reg (phi_def) ? SSA_OP_DEF : SSA_OP_VIRTUAL_DEFS);
-
- /* If the PHI node doesn't the operand type we care about, we're done. */
+
+ /* If the PHI node doesn't have the operand type we care about,
+ we're done. */
if ((flags & comp) == 0)
{
ptr->done = true;
- return NULL_USE_OPERAND_P;
+ return NULL_DEF_OPERAND_P;
}
ptr->iter_type = ssa_op_iter_def;
return PHI_RESULT_PTR (phi);
}
+/* Return true is IMM has reached the end of the immediate use stmt list. */
+static inline bool
+end_imm_use_stmt_p (const imm_use_iterator *imm)
+{
+ return (imm->imm_use == imm->end_p);
+}
-/* Return true if VAR cannot be modified by the program. */
+/* Finished the traverse of an immediate use stmt list IMM by removing the
+ placeholder node from the list. */
-static inline bool
-unmodifiable_var_p (tree var)
+static inline void
+end_imm_use_stmt_traverse (imm_use_iterator *imm)
{
- if (TREE_CODE (var) == SSA_NAME)
- var = SSA_NAME_VAR (var);
+ delink_imm_use (&(imm->iter_node));
+}
- if (MTAG_P (var))
- return TREE_READONLY (var) && (TREE_STATIC (var) || MTAG_GLOBAL (var));
+/* Immediate use traversal of uses within a stmt require that all the
+ uses on a stmt be sequentially listed. This routine is used to build up
+ this sequential list by adding USE_P to the end of the current list
+ currently delimited by HEAD and LAST_P. The new LAST_P value is
+ returned. */
- return TREE_READONLY (var) && (TREE_STATIC (var) || DECL_EXTERNAL (var));
+static inline use_operand_p
+move_use_after_head (use_operand_p use_p, use_operand_p head,
+ use_operand_p last_p)
+{
+ gcc_checking_assert (USE_FROM_PTR (use_p) == USE_FROM_PTR (head));
+ /* Skip head when we find it. */
+ if (use_p != head)
+ {
+ /* If use_p is already linked in after last_p, continue. */
+ if (last_p->next == use_p)
+ last_p = use_p;
+ else
+ {
+ /* Delink from current location, and link in at last_p. */
+ delink_imm_use (use_p);
+ link_imm_use_to_list (use_p, last_p);
+ last_p = use_p;
+ }
+ }
+ return last_p;
+}
+
+
+/* This routine will relink all uses with the same stmt as HEAD into the list
+ immediately following HEAD for iterator IMM. */
+
+static inline void
+link_use_stmts_after (use_operand_p head, imm_use_iterator *imm)
+{
+ use_operand_p use_p;
+ use_operand_p last_p = head;
+ gimple head_stmt = USE_STMT (head);
+ tree use = USE_FROM_PTR (head);
+ ssa_op_iter op_iter;
+ int flag;
+
+ /* Only look at virtual or real uses, depending on the type of HEAD. */
+ flag = (is_gimple_reg (use) ? SSA_OP_USE : SSA_OP_VIRTUAL_USES);
+
+ if (gimple_code (head_stmt) == GIMPLE_PHI)
+ {
+ FOR_EACH_PHI_ARG (use_p, head_stmt, op_iter, flag)
+ if (USE_FROM_PTR (use_p) == use)
+ last_p = move_use_after_head (use_p, head, last_p);
+ }
+ else
+ {
+ if (flag == SSA_OP_USE)
+ {
+ FOR_EACH_SSA_USE_OPERAND (use_p, head_stmt, op_iter, flag)
+ if (USE_FROM_PTR (use_p) == use)
+ last_p = move_use_after_head (use_p, head, last_p);
+ }
+ else if ((use_p = gimple_vuse_op (head_stmt)) != NULL_USE_OPERAND_P)
+ {
+ if (USE_FROM_PTR (use_p) == use)
+ last_p = move_use_after_head (use_p, head, last_p);
+ }
+ }
+ /* Link iter node in after last_p. */
+ if (imm->iter_node.prev != NULL)
+ delink_imm_use (&imm->iter_node);
+ link_imm_use_to_list (&(imm->iter_node), last_p);
+}
+
+/* Initialize IMM to traverse over uses of VAR. Return the first statement. */
+static inline gimple
+first_imm_use_stmt (imm_use_iterator *imm, tree var)
+{
+ imm->end_p = &(SSA_NAME_IMM_USE_NODE (var));
+ imm->imm_use = imm->end_p->next;
+ imm->next_imm_name = NULL_USE_OPERAND_P;
+
+ /* iter_node is used as a marker within the immediate use list to indicate
+ where the end of the current stmt's uses are. Initialize it to NULL
+ stmt and use, which indicates a marker node. */
+ imm->iter_node.prev = NULL_USE_OPERAND_P;
+ imm->iter_node.next = NULL_USE_OPERAND_P;
+ imm->iter_node.loc.stmt = NULL;
+ imm->iter_node.use = NULL;
+
+ if (end_imm_use_stmt_p (imm))
+ return NULL;
+
+ link_use_stmts_after (imm->imm_use, imm);
+
+ return USE_STMT (imm->imm_use);
+}
+
+/* Bump IMM to the next stmt which has a use of var. */
+
+static inline gimple
+next_imm_use_stmt (imm_use_iterator *imm)
+{
+ imm->imm_use = imm->iter_node.next;
+ if (end_imm_use_stmt_p (imm))
+ {
+ if (imm->iter_node.prev != NULL)
+ delink_imm_use (&imm->iter_node);
+ return NULL;
+ }
+
+ link_use_stmts_after (imm->imm_use, imm);
+ return USE_STMT (imm->imm_use);
}
-/* Return true if REF, an ARRAY_REF, has an INDIRECT_REF somewhere in it. */
+/* This routine will return the first use on the stmt IMM currently refers
+ to. */
+
+static inline use_operand_p
+first_imm_use_on_stmt (imm_use_iterator *imm)
+{
+ imm->next_imm_name = imm->imm_use->next;
+ return imm->imm_use;
+}
+
+/* Return TRUE if the last use on the stmt IMM refers to has been visited. */
static inline bool
-array_ref_contains_indirect_ref (tree ref)
+end_imm_use_on_stmt_p (const imm_use_iterator *imm)
{
- gcc_assert (TREE_CODE (ref) == ARRAY_REF);
+ return (imm->imm_use == &(imm->iter_node));
+}
- do {
- ref = TREE_OPERAND (ref, 0);
- } while (handled_component_p (ref));
+/* Bump to the next use on the stmt IMM refers to, return NULL if done. */
+
+static inline use_operand_p
+next_imm_use_on_stmt (imm_use_iterator *imm)
+{
+ imm->imm_use = imm->next_imm_name;
+ if (end_imm_use_on_stmt_p (imm))
+ return NULL_USE_OPERAND_P;
+ else
+ {
+ imm->next_imm_name = imm->imm_use->next;
+ return imm->imm_use;
+ }
+}
+
+/* Return true if VAR cannot be modified by the program. */
+
+static inline bool
+unmodifiable_var_p (const_tree var)
+{
+ if (TREE_CODE (var) == SSA_NAME)
+ var = SSA_NAME_VAR (var);
- return TREE_CODE (ref) == INDIRECT_REF;
+ return TREE_READONLY (var) && (TREE_STATIC (var) || DECL_EXTERNAL (var));
}
/* Return true if REF, a handled component reference, has an ARRAY_REF
somewhere in it. */
static inline bool
-ref_contains_array_ref (tree ref)
+ref_contains_array_ref (const_tree ref)
{
- gcc_assert (handled_component_p (ref));
+ gcc_checking_assert (handled_component_p (ref));
do {
if (TREE_CODE (ref) == ARRAY_REF)
return false;
}
-/* Given a variable VAR, lookup and return a pointer to the list of
- subvariables for it. */
+/* Return true if REF has an VIEW_CONVERT_EXPR somewhere in it. */
-static inline subvar_t *
-lookup_subvars_for_var (tree var)
+static inline bool
+contains_view_convert_expr_p (const_tree ref)
{
- var_ann_t ann = var_ann (var);
- gcc_assert (ann);
- return &ann->subvars;
+ while (handled_component_p (ref))
+ {
+ if (TREE_CODE (ref) == VIEW_CONVERT_EXPR)
+ return true;
+ ref = TREE_OPERAND (ref, 0);
+ }
+
+ return false;
}
-/* Given a variable VAR, return a linked list of subvariables for VAR, or
- NULL, if there are no subvariables. */
+/* Return true, if the two ranges [POS1, SIZE1] and [POS2, SIZE2]
+ overlap. SIZE1 and/or SIZE2 can be (unsigned)-1 in which case the
+ range is open-ended. Otherwise return false. */
+
+static inline bool
+ranges_overlap_p (unsigned HOST_WIDE_INT pos1,
+ unsigned HOST_WIDE_INT size1,
+ unsigned HOST_WIDE_INT pos2,
+ unsigned HOST_WIDE_INT size2)
+{
+ if (pos1 >= pos2
+ && (size2 == (unsigned HOST_WIDE_INT)-1
+ || pos1 < (pos2 + size2)))
+ return true;
+ if (pos2 >= pos1
+ && (size1 == (unsigned HOST_WIDE_INT)-1
+ || pos2 < (pos1 + size1)))
+ return true;
+
+ return false;
+}
-static inline subvar_t
-get_subvars_for_var (tree var)
+/* Accessor to tree-ssa-operands.c caches. */
+static inline struct ssa_operands *
+gimple_ssa_operands (const struct function *fun)
{
- subvar_t subvars;
+ return &fun->gimple_df->ssa_operands;
+}
- gcc_assert (SSA_VAR_P (var));
-
- if (TREE_CODE (var) == SSA_NAME)
- subvars = *(lookup_subvars_for_var (SSA_NAME_VAR (var)));
- else
- subvars = *(lookup_subvars_for_var (var));
- return subvars;
+/* Given an edge_var_map V, return the PHI arg definition. */
+
+static inline tree
+redirect_edge_var_map_def (edge_var_map *v)
+{
+ return v->def;
}
-/* Return the subvariable of VAR at offset OFFSET. */
+/* Given an edge_var_map V, return the PHI result. */
static inline tree
-get_subvar_at (tree var, unsigned HOST_WIDE_INT offset)
+redirect_edge_var_map_result (edge_var_map *v)
{
- subvar_t sv;
+ return v->result;
+}
- for (sv = get_subvars_for_var (var); sv; sv = sv->next)
- if (sv->offset == offset)
- return sv->var;
+/* Given an edge_var_map V, return the PHI arg location. */
- return NULL_TREE;
+static inline source_location
+redirect_edge_var_map_location (edge_var_map *v)
+{
+ return v->locus;
}
-/* Return true if V is a tree that we can have subvars for.
- Normally, this is any aggregate type, however, due to implementation
- limitations ATM, we exclude array types as well. */
-static inline bool
-var_can_have_subvars (tree v)
+/* Return an SSA_NAME node for variable VAR defined in statement STMT
+ in function cfun. */
+
+static inline tree
+make_ssa_name (tree var, gimple stmt)
{
- return (AGGREGATE_TYPE_P (TREE_TYPE (v)) &&
- TREE_CODE (TREE_TYPE (v)) != ARRAY_TYPE);
+ return make_ssa_name_fn (cfun, var, stmt);
}
-
-/* Return true if OFFSET and SIZE define a range that overlaps with some
- portion of the range of SV, a subvar. If there was an exact overlap,
- *EXACT will be set to true upon return. */
+/* Returns the base object and a constant BITS_PER_UNIT offset in *POFFSET that
+ denotes the starting address of the memory access EXP.
+ Returns NULL_TREE if the offset is not constant or any component
+ is not BITS_PER_UNIT-aligned.
+ VALUEIZE if non-NULL is used to valueize SSA names. It should return
+ its argument or a constant if the argument is known to be constant. */
-static inline bool
-overlap_subvar (unsigned HOST_WIDE_INT offset, unsigned HOST_WIDE_INT size,
- subvar_t sv, bool *exact)
-{
- /* There are three possible cases of overlap.
- 1. We can have an exact overlap, like so:
- |offset, offset + size |
- |sv->offset, sv->offset + sv->size |
-
- 2. We can have offset starting after sv->offset, like so:
-
- |offset, offset + size |
- |sv->offset, sv->offset + sv->size |
-
- 3. We can have offset starting before sv->offset, like so:
-
- |offset, offset + size |
- |sv->offset, sv->offset + sv->size|
- */
-
- if (exact)
- *exact = false;
- if (offset == sv->offset && size == sv->size)
- {
- if (exact)
- *exact = true;
- return true;
- }
- else if (offset >= sv->offset && offset < (sv->offset + sv->size))
- {
- return true;
- }
- else if (offset < sv->offset && (size > sv->offset - offset))
+static inline tree
+get_addr_base_and_unit_offset_1 (tree exp, HOST_WIDE_INT *poffset,
+ tree (*valueize) (tree))
+{
+ HOST_WIDE_INT byte_offset = 0;
+
+ /* Compute cumulative byte-offset for nested component-refs and array-refs,
+ and find the ultimate containing object. */
+ while (1)
{
- return true;
+ switch (TREE_CODE (exp))
+ {
+ case BIT_FIELD_REF:
+ return NULL_TREE;
+
+ case COMPONENT_REF:
+ {
+ tree field = TREE_OPERAND (exp, 1);
+ tree this_offset = component_ref_field_offset (exp);
+ HOST_WIDE_INT hthis_offset;
+
+ if (!this_offset
+ || TREE_CODE (this_offset) != INTEGER_CST
+ || (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field))
+ % BITS_PER_UNIT))
+ return NULL_TREE;
+
+ hthis_offset = TREE_INT_CST_LOW (this_offset);
+ hthis_offset += (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field))
+ / BITS_PER_UNIT);
+ byte_offset += hthis_offset;
+ }
+ break;
+
+ case ARRAY_REF:
+ case ARRAY_RANGE_REF:
+ {
+ tree index = TREE_OPERAND (exp, 1);
+ tree low_bound, unit_size;
+
+ if (valueize
+ && TREE_CODE (index) == SSA_NAME)
+ index = (*valueize) (index);
+
+ /* If the resulting bit-offset is constant, track it. */
+ if (TREE_CODE (index) == INTEGER_CST
+ && (low_bound = array_ref_low_bound (exp),
+ TREE_CODE (low_bound) == INTEGER_CST)
+ && (unit_size = array_ref_element_size (exp),
+ TREE_CODE (unit_size) == INTEGER_CST))
+ {
+ HOST_WIDE_INT hindex = TREE_INT_CST_LOW (index);
+
+ hindex -= TREE_INT_CST_LOW (low_bound);
+ hindex *= TREE_INT_CST_LOW (unit_size);
+ byte_offset += hindex;
+ }
+ else
+ return NULL_TREE;
+ }
+ break;
+
+ case REALPART_EXPR:
+ break;
+
+ case IMAGPART_EXPR:
+ byte_offset += TREE_INT_CST_LOW (TYPE_SIZE_UNIT (TREE_TYPE (exp)));
+ break;
+
+ case VIEW_CONVERT_EXPR:
+ break;
+
+ case MEM_REF:
+ {
+ tree base = TREE_OPERAND (exp, 0);
+ if (valueize
+ && TREE_CODE (base) == SSA_NAME)
+ base = (*valueize) (base);
+
+ /* Hand back the decl for MEM[&decl, off]. */
+ if (TREE_CODE (base) == ADDR_EXPR)
+ {
+ if (!integer_zerop (TREE_OPERAND (exp, 1)))
+ {
+ double_int off = mem_ref_offset (exp);
+ gcc_assert (off.high == -1 || off.high == 0);
+ byte_offset += double_int_to_shwi (off);
+ }
+ exp = TREE_OPERAND (base, 0);
+ }
+ goto done;
+ }
+
+ case TARGET_MEM_REF:
+ {
+ tree base = TREE_OPERAND (exp, 0);
+ if (valueize
+ && TREE_CODE (base) == SSA_NAME)
+ base = (*valueize) (base);
+
+ /* Hand back the decl for MEM[&decl, off]. */
+ if (TREE_CODE (base) == ADDR_EXPR)
+ {
+ if (TMR_INDEX (exp) || TMR_INDEX2 (exp))
+ return NULL_TREE;
+ if (!integer_zerop (TMR_OFFSET (exp)))
+ {
+ double_int off = mem_ref_offset (exp);
+ gcc_assert (off.high == -1 || off.high == 0);
+ byte_offset += double_int_to_shwi (off);
+ }
+ exp = TREE_OPERAND (base, 0);
+ }
+ goto done;
+ }
+
+ default:
+ goto done;
+ }
+
+ exp = TREE_OPERAND (exp, 0);
}
- return false;
+done:
+ *poffset = byte_offset;
+ return exp;
}
#endif /* _TREE_FLOW_INLINE_H */
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